Eric Colburn, PLS

Tag: Charts

  • NGS Enabling Historical “T-Sheets” to be Accurately and Efficiently Geo-referenced

    NGS Enabling Historical “T-Sheets” to be Accurately and Efficiently Geo-referenced

    NGS Enabling Historical “T-Sheets” to be Accurately and Efficiently Geo-referenced Historical Topographic Sheets (“T-Sheets”) produced by the U.S. Coast and Geodetic Survey are referenced to various horizontal datums in use over the two hundred years since the first Survey of the Coast in 1816. To use these maps to document coastal change, a conversion has…

  • Professional Land Surveyor Weekly Roundup September 25, 2011

    Professional Land Surveyor Weekly Roundup September 25, 2011

    Updates & Upgrades In this week’s Professional Land Surveyor Weekly Roundup, I want to explain a few site upgrades in addition to this week’s summary. If you are a regular visitor here, you’ve no doubt noticed a new look. You also might have found some of the site features updated, too. What’s happening, simply is…

  • Captain John Lowell Named Director of NOAA Office of Coast Survey

    Lowell will also serve as Chief Hydrographer for the United States November 2, 2009 NOAA Corps Capt. John E. Lowell, Jr., has been named the new director of NOAA’s Office of Coast Survey. He will simultaneously serve as the U.S. national hydrographer. In his dual roles, Lowell will be responsible for overseeing NOAA’s hydrographic services,…